I have a Koala cabinet and wanted an insert for it. I ordered it through the Koala company, and when it came, it did not fit my cabinet. Apparently my cabinet was manufactured before the company was sold to an American company. The measurements of my cabinet are Australian measurements, and the company has changed the measurements to American measurements. (Does that make sense?!!)
Anyways, Koala ended up sending me a plastic see-through insert that works fine; however, I pre-paid $150, expecting a (fake) teakwood insert that would match my cabinet. I have since seen the same plastic insert available online for less than half the price.
My advice is to be careful if you go through Koala; make sure they know it is an older model and may have differing measurements. If they want to sell you a plastic insert, do your homework, for you may be able to order it for a lot less money. I LOVE my cabinet; I'm just not real happy with the people I dealt with to get the problems resolved.